SU312914A1 - RAILWAY TRANSPORT METER - Google Patents

Description

Railway track gauges are known, including a wagon supported on standard bogies equipped with wheel pairs, one of which is made with cylindrical roll surfaces, an electronic computer installed inside the wagon, mechanisms for measuring and recording the geometric and mechanical characteristics of the track, rail contact bodies and sensors in the form of a speed meter and an accelerometer.

However, the known track meters do not provide for the continuous determination and recording of instantaneous values of rail curvature in the vertical and horizontal planes.

For the purpose of continuous or intermittent determination and registration of instantaneous curvature values of rails in vertical and horizontal planes in the proposed railway track meter, the inputs of the analog electronic computing machine are electrically connected to a speed meter, kinematically connected to a wheel pair, and accelerators, some of which are rigidly mounted on axles with a cylindrical surface of the katani so that their sensitivity axes are oriented perpendicular to the plane Uchi, and others are mounted on a rail contact bodies in such a way that their axes of sensitivity are aligned parallel to the path and the plane perpendicular to the direction of movement of the carriage, and outputs the analog

The electronic computer is electrically connected with a recording or storage curvature of a rail thread device installed inside the car. To continuously determine the curvature of the trajectory of any points of the elements of the rolling stock, accelerometers with the required orientation of the sensitivity axes are mounted at these points. The drawing shows the proposed track gauge for determining the instantaneous curvature values of a railway track in schematic form.

The device contains electronic analogue placed in the car track meter

or digital computing machine / and recording storage equipment 2. The inputs of the machine are electrically connected to accelerators 3 fixed rigidly on typical axle boxes 4 of wheel set 5, and with

accelerators 6 installed on the rail contact bodies 7. The input of the computing machine is also connected electrically with a speed meter 8, kinematically connected with the axis of the wheel pair 5.

with the inputs of the recording - storage equipment.

The wheel pair is made with the cylindrical surface of the roll, with the aim of excluding the vertical displacement of the axle boxes, which appear when the wheel pair is not displaced during movement of the track gauge along the railway track. Under these conditions, the trajectory of movement of the wheel center repeats the trajectory of the point of contact of the wheel with the upper surface of the rail head.

The accelerators 3 are mounted on the axle boxes 5 so that their sensitivity axes are perpendicular to the plane connecting the rolling surface of the rails. The acceleration sensors 6 are mounted on rail contact bodies 7, which in the course of the track gauge along the path are in constant contact with the lateral working faces of the rail heads and repeat their outline in plan.

The sensitivity axes of the accelerators 6 are in the plane parallel to the plane connecting the rolling surfaces of the rails and the perpendicular to the direction of travel of the track gage.

The speed meter 8, which is a direct current tachogenerator, is connected directly or via a mechanical reducer to the axis of the wheel pair and, depending on the speed of rotation of the wheel, produces an electrical voltage proportional to the proportional speed of the wheel.

The accelerators 3 and 6 are electrically connected to the inputs 9, 10, 11 and 12 of the electronic computer. Speedometer 8 is electrically connected to the input 13 of the machine.

The proposed device works as follows.

When the track gauge is moving, with the vertical displacements of the wheel pair 5 in the course of its movement along the way, the accelerometers 3 produce electrical signals directly proportional to the second derivative of the trajectory of movement of the right and left axle boxes 4 of the vertical plane in time. Signals sent from accelerators 3 into an electronic computing machine / are converted into it according to the formulas:

K., Lev. + 2 (p. - vL) (1)

L. ev i, (n, .N,) ...., (2)

where ol opr is the vertical acceleration of the centers (respectively) of the left and right wheels of the measuring wheel pair;

and right accelerators 3;

a is the distance from the place of attachment of the accelerator to the plane of the circle of the roll;

b is the distance between the wheels Katani wheels; , NZ - scale factors.

The signals NiW received in the computer and the signal from the tachogenerator are converted by the formula

L / ft - {Y

 - nlv

where K, is the curvature of the trajectory of movement

wheel center 5; V is the translational speed of the measuring wheel.

couples;

TVs and - scale factors. From the output of machine 1, a signal that is directly proportional to the curvature of the trajectory of the wheel center in the vertical plane, which is equidistant to the contact trajectory of the wheel at each point in its path, goes to the recording equipment 2, which continuously records the measurement results to the appropriate information carrier. It is also possible to record curvature intermittently (at individual points of the path) using 2 memory devices of electronic computers as a recording device.

When moving along the path of the contact rail bodies 7 with horizontally mounted accelerators 6, the signals produced by the accelerometers arrive

to inputs 11 and 12 of machine 1, which converts them according to formula (3), but with different scale factors.

At the corresponding outputs, the maschines / at the same time receive signals proportional to the curvature of the trajectory of movement of the rail contact bodies 7 in the horizontal plane and the accelerometer 6, which is equidistant to the lateral working face of the corresponding rail.

The curvature values thus obtained are recorded by the apparatus 2.

Subject invention

Claims (2)

1. A railway travel meter, including a carriage, supported on typical bogies equipped with wheel pairs, one of which is made with cylindrical roll surfaces, an analog electronic computer installed inside the carriage, measuring and recording mechanisms for the geometric and mechanical characteristics of the track, contact rail organs and sensors in the form of a speed meter and an accelerometer, characterized in that, for the purpose of continuous or discontinuous determining and recording instantaneous curvature values of rails in vertical and horizontal planes; the inputs of an analog electronic computer are electrically connected to a speed meter, kinematically connected to a pair of wheels, and accelerators, some of which are rigidly mounted on the axles of a pair of wheels with a cylindrical Katani surface, that their sensitivity axes are oriented perpendicular to the plane of the track, while others are mounted on rail contact bodies in such a way that their axes are sensitive features are oriented parallel to the plane of the track and perpendicular to the direction of movement of the car, and the outputs of the analog electronic computer are electrically connected with a device that records or stores the curvature of a rail line with a device installed inside the car. 2. The track meter according to claim 1, characterized in that, in order to continuously or intermittently determine the curvature of the trajectory of any points of the rolling stock, accelerometers with the required orientation of the sensitivity axes are mounted at these points.